Lately, some enthusiasts in the overclocking world have discovered that the Mobile Barton processor has great potential as a good overclocker in desktop computers. Claims of overclocking a Mobile Barton 2500+ (1.83 ghz) to 2500-2700mhz are quite common. We got our hands on a Mobile Barton 2500+ to see if we could achieve similar results.
Information:
What's the difference between a Mobile barton and a regular desktop Barton? The Mobile Barton is a regular Barton that can run at the same speed as a desktop version except it can run at 1.45 Vcore. Those processors that can run at 1.45 Vcore are deemed Mobiles those that can't are desktop versions. The lower vcore will allows laptop computers to run cooler. It will also allow for higher overclocks compare to the desktop chip.
The second thing that makes these Mobiles so open to overclocking, is the fact that they're unlocked! You see, AMD laptops use PowerNow technology that throttles down the CPU's mhz to save battery life. If your just surfing around the processor will drop to a low mhz. Start playing a game and up she goes to full CPU power! For all of this to work the CPU has to be unlocked for PowerNow to take advantage of the potential battery life savings.
When you purchase a Mobile barton, they don't come in some fancy box like your typical desktop ones. In fact they are sold as OEM, for replacement in laptops.
Above you'll see that our Mobile Barton 2500+ has 'graffiti' on it. I assume this was done so the staff that shipped us the CPU would know the difference between a Mobile and regular OEM processor.
Here's a close up shot of our chips steppings.
SPECIFICATIONS:
Processor: XP 2500+ Mobile Barton processor
Cache: L1/64K+64K; L2/512K
mhz: 1830 MHZ
Bus: 266MHZ
Stepping: IQYHA
Multiplier: 11 (Unlocked)
Voltage: 1.45V
Process: 0.13Micron
Socket: Socket A
Remember not all processors are created equal, and results will vary even with the same type processor.
Test System
AMD Barton XP 2500+ 266 MHz (IQYHA)
Asus A7N8X Deluxe rev 2.0
Corsair PC2700 XMS 512 MEGS
Zalman cnps7000a heatsink
Western Digital 80 gig 8 meg cache.
Arctic Silver thermal paste
Memory timings where set to optimal and DDR Voltage was left at 1.6. AGP bus was locked at 66MHZ.
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